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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

The test substance is readily biodegradable (according to OECD criteria). 

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

The biodegradability of 2-diethylaminoethanol (CAS 100-37-8) was determined in a GLP guideline study according to OECD 301A (BASF AG, 2002) using domestic activated sludge as inoculum. The test substance was determined to be readily biodegradable after 28 d (ten day window was met; 82% based on BOD after 10 d).

The key data are supported by the results of an inherent biodegradability test according to OECD TG 302 B (Zahn-Wellens/EMPA Test) with domestic activated sludge as inoculum; biodegradation of the substance was 96% after 14 d, based on BOD (BASF AG, 1994).


In addition, Eide-Haugmo et al. (2012/2009) performed two guideline studies according to OECD 306 using natural seawater as inoculum. The chemical turned out to be poorly biodegradable under marine conditions (<5% O2 -consumption after 28 d).


In conclusion, the substance is readily biodegradable (according to OECD criteria).